C++ class pointers / c++ klasy wskazniki

I started to study for exams, so write and write :)
___________________________________________
#include <iostream>

using namespace std;
class A
{
public:
    A():x(0),y(0){}
    A(int X,int Y);
    void write();
    int A::*wsk1;
    int (A::*w)();
    int go_to_y();
    int(A::*t[1])();
private:
    int x,y;

};
//definitions
A:: A(int X,int Y):x(X),y(Y)
{
    wsk1=&A::x;
    w=&A::go_to_y;
    t[0]=&A::go_to_y;
}
int A::go_to_y()
{
    return y;
}
void A::write()
{
    cout<<"x="<<x<<" y="<<y<<endl;
}
int main()
{
    cout << "Simple class" << endl;
    A o1;
    A o2(1,2);
    cout<<"Write basic"<<endl;
    o1.write();
    cout<<"Write with arguments"<<endl;
    o2.write();
    cout<<"Pointer to x="<<o2.wsk1<<endl;
    cout<<"Pointer to function y="<<o2.w<<endl;
    cout<<"Pointer to function y="<<o2.t[0]<<endl;

    return 0;
}